DEPARTMENT OF THE ARMY TECHNICAL BULLETIN WD CARC SPOT PAINTING

TB 43-0242
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
WD CARC SPOT PAINTING
HEADQUARTERS, DEPARTMENT OF THE ARMY
3 Dec 2007
Approved for Public Release; Distribution is Unlimited
TABLE OF CONTENTS
Paragraph
Page
SECTION I. INTRODUCTION
Purpose
Scope
Definition of Terms
Suggested Improvements
General
1-1
1-2
1-3
1-4
1-5
1
1
1
1
1
SECTION II. THE WD CARC SYSTEM
The System
Identification
Spot Painting
WD CARC Test
Where Not Used
CARC on Wood
Painting Responsibility
Touch-up Painting
Camouflage Patterns
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2
2
2
3
3
3
4
4
4
SECTION III. BEFORE YOU PAINT
Before You Paint
Pubs You Need
Material Safety Data Sheets
Health Concerns
Weather for Painting
Coverage
Curing
3-1
3-2
3-3
3-4
3-5
3-6
3-7
4
4
4
5
5
5
5
This TB supercedes TB 43-0242, CARC Spot Painting, dated 1 Jan 1991
i
TB 43-0242
Paragraph
Page
SECTION IV. SAFETY PRECAUTIONS
Safety Needed
Solvents
Personal Protection
4-1
4-2
4-3
6
6
6
SECTION V. TOUCHUP STEP-BY-STEP
Steps to Follow
Surface Preparation
Pretreatment
WD Primer
WD CARC
Unused Paint
5-1
5-2
5-3
5-4
5-5
5-6
7
7
8
8
9
10
SECTION VI. PAINT FAILURES
Reasons for Failure
What to Do
6-1
6-2
10
10
SECTION VII. WELDING WD CARC-PAINTED SURFACES
Welding is Out
Remove Paint
7-1
7-2
11
11
SECTION VIII. PAINT REMOVAL
Stripper
Safety
Waste Disposal
8-1
8-2
8-3
11
11
11
SECTION IX. RESPIRATOR CARE
Respirator Authorized
Training, Fitting and Testing
Before Use
Respirator Use
Cartridge Changes
Paint Pre-filter Replacement
Filter Replacement for Sanding and Grinding Operations
Cleaning
Storage
9-1
9-2
9-3
9-4
9-5
9-6
9-7
9-8
9-9
11
11
11
11
11
11
11
12
12
APPENDIX A. PUBLICATION LIBRARY
A-1
APPENDIX B. WD CARC SYSTEM NSNs
B-1
ii
TB 43-0242
d. WD CARC. Water Dispersible Chemical Agent Resistant Coating, MIL-DTL-64159,
Type I and II. A water-reduced topcoat that provides a surface easily decontaminated after exposure to liquid chemical agents. Type I has a
silica-based flattening agent. Type II uses a polymeric flattening agent that improves its performance properties and makes it the recommended
choice over Type I when using WD CARC.
SECTION I. INTRODUCTION
1-1. Purpose. This bulletin explains the Water Dispersible Chemical Agent Resistant Coating (WD CARC) process and provides field
maintenance methods of spot painting using WD
CARC.
1-2. Scope. This bulletin contains information
on WD CARC for field maintenance personnel.
It covers the reasons WD CARC is used, application procedures, safety precautions and provides NSNs for the components of the WD
CARC system.
1-4. Suggested Improvements. You can help
improve this bulletin. If you find any mistakes
or know of a way to improve the procedures,
please let us know. Mail your letter or DA Form
2028 to: Commander, USAMC LOGSA,
AMXLS-AM, Bldg 5307, Redstone Arsenal, AL
35898-5000.
1-3. Definition of Terms. The following terms
will be used throughout this TB:
1-5. General. Traditionally, Army equipment
had been painted with solvent-based CARC containing high levels of Volatile Organic Compounds (VOC). Currently, the CARC inventory
has only two topcoats available which offer
lower VOCs and zero hazardous air pollutants
(HAPs). In comparison, WD CARC has very
low VOC levels. The lower the concentration—
which is measured in pounds per gallon (lb/
gal)—the safer it is for the environment and the
Soldier. The current solvent-based one-component CARC (MIL-DTL-53039) has a Type I
which has a maximum of 3.5 lb/gal of VOC and
a Type II which has 1.5 lb/gal or less of VOC.
WD CARC has a VOC of only about 1.8 lb/gal
or less. Since the solvents used to thin CARC
also contain high concentrations of VOCs, the
lb/gal concentration can actually increase. On
the other hand, WD CARC is thinned with deionized water, which further reduces the VOC
concentration. WD CARC has many distinct
attributes:
a. CARC. Solvent-based Chemical Agent
Resistant Coating, MIL-DTL-53039. A solventreduced topcoat that provides a surface easily
decontaminated after exposure to liquid chemical agents. This topcoat may still be used on
vehicles, though it does not have touch-up kits
available.
b. Wash primer. A two-component organic pretreatment, DOD-P-15328D (for steel
or aluminum) and MIL-C-8514C (for steel or
aluminum). The wash primer is applied to a
clean metal surface to prepare it for a more permanent protective primer.
c. WD Primer. A water-reducible epoxy
primer, MIL-P-53030A, MIL-DTL-53030B,
MIL-DTL-53022C (white, for steel and aluminum surfaces), or MIL-PRF-85582C (for steel
or aluminum surfaces). Use Type II Class C2
for aviation equipment and you can use either
Class C2 or N for tactical ground or support
equipment. These anti-corrosive primers can be
applied to pretreated metal surfaces to promote
adhesion for either the solvent-based CARC or
WD CARC topcoats.
a. Compatibility. Since WD CARC is
fully compatible with all existing CARC primers and topcoats, you can use it to touch up a
vehicle that has been painted with CARC.
1
TB 43-0242
b. Flexibility. WD CARC is more flexible after application. That means fewer problems with chipping and cracking.
2-2. Identification. Most Army equipment is
painted with either CARC or WD CARC and
should have “CARC” stenciled near the data
plate.
c. Mar resistance. WD CARC is more
durable and doesn’t scratch as easily as CARC.
That means less time spot painting to fix
scratches and scrapes.
2-3. Spot Painting. When a CARC-painted
surface is scraped, scratched or damaged, its resistance to chemical agents is lessened and it
becomes susceptible to corrosion. Depending
on the location and size of the area damaged,
spot painting may be required. Vehicles or
equipment painted with CARC or WD CARC
should always be spot painted with CARC or
WD CARC. WD CARC is fully compatible
with all existing CARC primers and topcoats
and is preferred for spot painting. However,
solvent-based CARC (MIL-DTL-53039) can be
used if you still have some on hand. One thing
you should never use is a commercial off-theshelf can of aerosol enamel or alkyd paint.
Here’s why:
d. Weather resistance. WD CARC is
much more durable in all weather conditions.
In fact, tests have shown that WD CARC can
last three to five times longer than the original
or first generation CARC ( MIL-C-46168) which
was replaced with either MIL-DTL-53039 or
MIL-DTL-64159.
e. Color stability. WD CARC resists fading. So when you do have to spot paint, you
won’t have to worry about the colors not matching.
a. These paints are not matched to federal standard color chips. They quickly fade to
a lighter shade that shows up clearly and can
mark your vehicle as an enemy target.
SECTION II. THE WD CARC
SYSTEM
2-1. The System. The WD CARC system is a
combination of pretreatments, WD primer and
a WD CARC topcoat. After surface preparation and pretreatment, exteriors of vehicles are
treated with a wash primer and then painted with
WD primer followed by a WD CARC topcoat.
Here’s how WD CARC stacks up
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Do not use commercial
spray paint on Army
vehicles
b. They do not offer any signature reduction capabilities such as infrared reflectivity.
Again, they can leave a spot on your vehicle that
looks remarkably similar to a bull’s-eye.
Primer (0.8-1.5 mils)
Pretreatment (0.3-0.5 mils)
2
TB 43-0242
c. These spray-on paints do not resist
chemical agents. Instead, they can actually soak
up the agent, making it impossible to decontaminate the vehicle without physically removing the
sprayed-on paint. Soldiers can still be exposed
to chemical agents even after the vehicle is decontaminated.
... and exhaust pipes
other surfaces that conduct heat or reach temperatures above 400oF.
2-4. WD CARC Test. If you suspect that your
vehicle has been spot painted with a commercial can of aerosol enamel or alkyd paint, run
this test. Wet a cloth with acetone and rub hard
on the suspected surface for 10 seconds. Wet
another clean cloth with acetone and rub again
for 10 seconds in the same spot. If no paint
comes off the second time, it’s either CARC or
WD CARC. (The second wipe is necessary because the first wipe may remove overspray.) If
paint comes off the second time, it’s the wrong
stuff. You’ll have to completely remove the bad
paint by sanding or grinding before spot painting with WD CARC.
If you’re not sure whether to use CARC
on a particular surface, check with your Logistics Assistance Representative at the local
USAMC Logistics Assistance Office (LAO). If
you don’t know where to locate your LAO, check
out DA Pam 750-8, TAMMS, Table C-2, beginning on Page 242. You can also access LAO
offices on the Internet at:
https://aeps.ria.army.mil/aepspublic.cfm
Click on AMC LSE OFFICES under Public Applications. That takes you to a locator web
page displaying LAO regions on a flattened
globe. Click on the region you want and you’ll
get a map of the region and where LAOs are
located. Click on the location you want to get
the email address for that office.
2-5. Where Not Used. CARC is NOT to be
used on fabrics, metals that have anodized or
parkerized finishes (like weapons), hoses or
other flexible surfaces. It should not be used on
exhaust pipes, turbochargers, cooling fins or
Keep WD CARC away
from rubber hoses. . .
2-6. CARC on Wood. Neither CARC nor WD
CARC lasts well on wood. Wood expands and
contracts with weather changes but CARC/WD
CARC won’t. It’s not flexible enough to move
with the wood, so it cracks and peels off.
Do not use WD CARC on wooden
items such as chock blocks
3
TB 43-0242
cations that will come in handy as references
for painting operations and safety:
Follow the good words in Para 3-5e of TM
43-0139, Painting Instructions for Army Materiel, to protect wood.
a. TM 43-0139, Painting Instructions for
Army Materiel. This manual discusses painting
operations, procedures for marking and camouflaging equipment, and methods of applying different types of paint.
2-7. Painting Responsibility. The word on
who uses WD CARC is found in Para 8-9 of
AR 750-1, Army Material Maintenance Policy.
Complete repainting may be done at both Field
and Sustainment levels as long as an Occupational Safety and Health Administration (OSHA)
approved facility is available. Vehicles may be
completely repainted when 25 percent or more
of the total vehicle area is deemed unserviceable by supervisory maintenance personnel.
Painting at Field level using a brush or roller is
limited to touchup painting, which includes restoring painted surfaces after repair.
b. TB 43-0209, Color, Marking, and
Camouflage Painting of Military Vehicles, Construction Equipment and Materials Handling
Equipment. This bulletin covers vehicle safety
and technical markings, safety information for
dealing with all types of paint, and camouflage
patterns.
2-8. Touch-up Painting. Touch-up painting is
done to prevent corrosion, not for purely cosmetic reasons. If the paint is marred, but not
deep enough to see bare metal, you do not need
to paint.
2-9. Camouflage Patterns. The Army uses a
three-color camouflage pattern for equipment
used in wooded and other green-vegetated areas and in some arctic or partially snow-covered areas. Single colors are used for desert and
totally snow-covered areas. When you’re touching up a camouflaged surface, try to repaint using the original camouflage pattern. That pattern was designed to best camouflage the equipment.
c. TB MED 502, Occupational and Environmental Health Respiratory Protection Program. This publication contains information on
respirators, including training, face-fitting, leaktesting and maintenance procedures.
SECTION III. BEFORE YOU
PAINT
3-1. Before You Paint. There’s more to using
WD CARC (or any other paint) than grabbing a
brush, a can of paint and getting to work. Poor
preparation results in a poor paint job that may
soon have to be redone.
d. Other helpful publications can be found
listed in Appendix A.
3-3. Material Safety Data Sheets (MSDS).
An MSDS should be prepared by the manufacturer and accompany each single shipment or
3-2. Pubs You Need. There are several publi4
TB 43-0242
batch of wash primer, WD primer or WD CARC.
It is very important that anyone working with
these substances read and be familiar with the
special precautions or procedures needed, as well
as first-aid measures. Along with the product’s
ingredients and specific protection information,
the MSDS will contain:
low temperatures
o
F
and high humidity.
At 70 oF, it takes
120
110
100
about one week for a
90 Ideal
80
complete
cure,
70 painting
60
though the vehicle
50 temp
40
30
can be handled in a
20
10
few hours. Good,
0
-10
proper ventilation
-20
-30
-40
will also assist in
drying when humidity is high (greater
than 70%). Higher
temperatures and
lower humidity will reduce cure times for WD
CARC.
a. Reactivity Data. This tells about the
stability, hazardous decomposition, and other
properties of the substance.
b. Spill and Disposal Procedures. This
tells you what steps have to be taken in the event
of an accidental spill and how to dispose of leftover product.
b. Paint in the shade, on overcast days, or
in the evening hours to avoid direct sunlight.
c. Fire and Explosion Hazard Data. This
provides the flash point of the product, special
fire fighting procedures, and what type of fire
extinguisher may be required.
3-6. Coverage. The wash primer, WD primer
and WD CARC are two-component compounds.
Be sure that you mix the components in the
proper proportion. Using the wrong proportion
won’t make the compound dry quicker or produce a better coating. In fact, you may end up
with paint that peels right off. Take a look at
Section V for mixing instructions. A quart of
WD CARC topcoat or WD primer will cover
about 100 square feet.
d. Health Hazards. This makes you aware
of any emergency or first-aid procedures required if the product is inhaled or comes in contact with your skin or eyes.
3-4. Health Concerns. Check with your local
safety office and medical support facility. They
can advise you on the hazards involved in painting operations and proper precautions to take.
WD CARC
(MIL-DTL-64159)
1 quart
a. Try to paint when the temperature is between 60oF and 90oF. The ideal temperature is
70oF with a humidity of 45-50 percent. You can
paint with WD CARC when the temperature and
humidity are more or less than the ideal, but cure
time will be affected. Cure time increases with
10 feet
3-5. Weather for Painting. Weather conditions when you paint are important. Painting
when temperatures are too hot or cold greatly
affect the cure time. The paint may not dry properly and probably will not last. You’ll get the
best results when you:
10 feet
3-7. Curing. Once you mix the two components of the wash primer, WD primer or WD
CARC topcoat, they start to harden—cure—and
nothing can stop it.
5
TB 43-0242
Respirator may be needed while spot painting
a. Wash primer. MIL-C-8514 will last
about four hours before hardening. You have
about eight hours to use DOD-P-15328.
b. WD primer. You have about six hours
to use MIL-DTL-53030B WD primer and MILDTL-53022C solvent-based primer. You’ll have
four hours to use MIL-PRF-85582C WD primer.
ing with WD CARC. When spot painting with
a brush or roller, however, you may or may not
need a respirator, depending on the conditions
and location. Contact your local occupational
safety and health office to perform an air sample
evaluation of your work area. If a respirator is
required, they’ll do a baseline medical evaluation, fit-test you for the proper respirator and
train you in its use. Let them know if any sanding or grinding of old paint will be done. A different type of respirator may be required to filter out dust.
c. WD CARC. Both Type I and Type II
WD CARC begins to harden four hours after
mixing.
SECTION IV. SAFETY
PRECAUTIONS
4-1. Safety Needed. Just like most things you
do during the course of any day in the motor
pool, there are certain safety procedures that you
have to follow when painting. For most touchup
painting, you need to take a few commonsense
precautions.
b. Gloves. Wear silicone rubber gloves
that will keep the paint off of your hands. Solvents in the paint
Rubber gloves
can be absorbed
protect hands
through your skin,
and make your
hands dry and
cracked. Some solvents and other
CARC components
can make you sick,
too. Besides, WD CARC that dries on your skin
won’t come off easily. You’ll have to scrub with
soap and water to remove it.
4-2. Solvents. The concentration of solvents
in WD CARC is much lower than in CARC,
but it does still contain solvents. These solvents
are potentially flammable, so never paint around
open flames or where there are sparks, like from
someone welding.
4-3. Personal Protection. Although WD
CARC is water-based, the personal protective
equipment required during spray and brush application remains the same as for CARC. Both
contain solvents, so you’ll need plenty of ventilation. If possible, paint outside, but out of the
direct sun. If you must paint inside a building,
paint in a bay with doors open on each end. Your
local industrial hygienist can measure the airflow to see if you have adequate ventilation.
Then make sure you have the following protective equipment:
c. Face Protection. Use a face shield or
splash goggles to keep paint off your face and
out of your eyes, especially
when mixing. You’ll need
the shield or goggles to protect your eyes if you use a
power sander or grinder to
prepare the
Protect eyes with
surface, too. face shield
a. Respirator. A respirator—not just a
dust mask—is always required when spray paint6
TB 43-0242
surface. Inspect the surface to be spot painted
and follow these steps:
d. Clothing. Wear clothing that covers all
of your skin. Coveralls work well. Keep sleeves
rolled completely down. When sanding and
grinding, wear coveralls that are disposable or
that stay at work. This helps to prevent any contaminants in paint dust from being carried home
on clothing.
a. Sanding. If the topcoat is merely
scratched, lightly scuff sand the blemished area.
Damage that exposes bare metal often involves
rust. You must remove all traces of rust by sanding or with an orbital grinder. The surface immediately surrounding the exposed metal should
then be sanded, using a feathering-in technique.
In other words, the thickness of the film should
be smoothly tapered starting from the center and
going from bare metal, to primer, to topcoat.
Clean up any dust or paint particles with a wet/
dry HEPA vacuum, wet wipes, or sweep up using a sweeping compound to supress dust.
e. Hearing Protection. Normally you will
not need hearing protection when you paint.
However, you will need
earplugs or noise muffs
if you use a power
sander or grinder to remove old paint and rust.
Use ear plugs when
sanding or grinding The folks from your local occupational safety
and health office can tell you the right hearing
protection to use.
b. Cleaning. Wash the surface thoroughly
with a solution of liquid detergent, NSN 7930-
Section V. TOUCHUP STEP-BYSTEP
Wash with detergent
and water solution
5-1. Steps to Follow. There are a number of
steps to follow when you spot paint with the WD
CARC system. If you skip a step or take a shortcut, you’ll end up with a coating that peels easily or one that bubbles up and falls off.
5-2. Surface Preparation. Surface preparation
is important. If you skip it, or skimp on it, the
paint won’t stick to the surface. You can apply
WD CARC over CARC, but the old topcoat
must be clean, sound, and tightly bonded to the
Original topcoat
Taper old paint and primer
edges down to bare metal
Original
primer
Bare metal
7
TB 43-0242
24 hours—apply a coat of WD primer.
00-282-9699, and water. You must remove all
loose sanding debris, grease, oil (including fingerprints), and fuel residue to ensure the WD
primer and WD CARC will properly stick to the
surface. Rinse completely with clean water and
let the area dry. Crevices and seams will take
longer to dry, so make sure all moisture is gone
before continuing. Be very careful to keep the
surface free of dirt, dust, fingerprints and other
contaminants after cleaning.
a. Mixing. Mixing instructions for WD
primer will depend on the type used.
(1) MIL-DTL-53030A. This epoxy
primer is intended for steel or aluminum surfaces and consists of two components. Component A is a pigmented polyamide while component B is a clear epoxy. Stir component A until
it is uniform in texture. Then mix one part of
component B with three parts of component A.
Stir until the mixture is smooth. Thin the WD
primer with deionized water. NSN 6810-01075-0618 brings a 4-oz bottle and NSN 655001-370-7494 gets a 5-gal bottle. You can also
use distilled water. Follow the manufacturer’s
instructions on how much water can be safely
added. Once mixed, allow the WD primer to
stand for 30 minutes before use. The WD primer
will harden in about six hours, so only mix up
what you need.
5-3. Pretreatment. If the old paint is sound
and you didn’t have to sand to bare metal, you
don’t need the pretreatment and WD primer, so
you can skip to Para 5-5. Otherwise, immediately coat all bare metal surfaces with a coat of
wash primer (DOD-P-15328 for steel surfaces
or MIL-C-8514 for aluminum surfaces). The
wash primer protects the surface and will help
the WD primer bond to it. A sponge gives better control for this application.
Sponge on pretreatment
(2) MIL-DTL-53022C. This epoxy
primer is intended for steel or aluminum surfaces and consists of two components. Component A is a pigmented polyamide while component B is a clear epoxy. Stir component A until
it is uniform in texture. Then mix one part of
component B with four parts of component A.
Stir until the mixture is smooth. Follow the
manufacturer’s instructions on how much solvent can be safely added, if needed. Once mixed,
allow the primer to stand for 30 minutes before
use. The primer will be ready to paint within 30
minutes or when the solvents have flashed off.
5-4. WD Primer. After the pretreatment coating is dry—at least 30 minutes, but no more than
New
topcoat
Brush on primer, then topcoat
Bare metal
8
New
primer
TB 43-0242
Two hours is an ideal time to properly allow the
solvents to flash off and the primer to cure. Only
mix up what you need since it has a pot life of
six to eight hours.
...then apply topcoat
(3) MIL-PRF-85582C. This epoxy
primer is intended for aluminum and steel surfaces. Use type II, Class C2, for aviation equipment and you can use either Class C2 or N for
tactical ground or support equipment. It consists
of two components. Component A is a pigmented epoxy resin solution while component
B is the curing agent. Mix the two components
in the proportion specified by the manufacturer.
Thin the WD primer with deionized or distilled
water. Follow the manufacturers instructions on
how much water can be safely added. Once
mixed, allow the WD primer to stand for 30
minutes before use. The WD primer will harden
in about four hours, so only mix up what you
need.
lowing information applies to both Type I and
Type II WD CARC. The kits are approved and
recognized as Type III for MIL-DTL-64159.
Efforts are ongoing to include touch up kits for
MIL-DTL-53039 solvent-based CARC. However, touch up kits are currently available only
for the WD-CARC version.
a. Bulk kits. These kits are available in
sizes of 3 pints, 3 quarts, 3 gallons and 15 gallons. See Pages B-2 through B-4 for ordering
information.
b. Application. Use a paint brush to apply the WD primer. The coating should be 1.0
to 1.5 mils for MIL-P-53030A and 0.8 to 1.2
mils for MIL-PRF-85582C. After application,
the WD primer will dry hard in about five to six
hours. High humidity and low temperatures will
slow the drying process.
(1) Mixing. WD CARC comes in twocomponent kits that have to be mixed before use.
Component A is a hydroxyl functional polyurethane that includes pigments, additives and solvents. Component B is an aliphatic isocyanate
prepolymer. The mixing ratio is two parts of
component A to one part of component B. Once
the two components are thoroughly mixed, you
can thin the paint by adding deionized water.
Follow the manuBulk kits must be
facturers recomproperly mixed
mendation on
how much water
can be safely
added. Be careful not to overthin with water
since that will
make the paint
unusable. Again,
Brush on primer...
5-5. WD CARC. Once the WD primer is dry,
it’s time to apply the WD CARC topcoat. WD
CARC is available in bulk kits or self-contained
touch-up kits. Select the WD CARC application that best fits your situation. All of the fol9
TB 43-0242
darker are acceptable so long as qualified products are being used. See Pages B-5 through B-7
for ordering information. Follow the
manufacturer’s instructions for use.
you must thoroughly mix the paint to ensure the
water and both components are completely
blended.
(2) Application. Use a paint brush or
roller to apply the WD CARC to a thickness of
1.8 to 2.5 mils. Cure time will increase with
low temperatures and high humidity, and decrease with higher temperatures and low humidity. At an optimum temperature of 70oF, Type I
WD CARC will dry to touch in approximately
50 minutes, dry hard in four hours, dry through
in five hours, and completely cure within seven
days. Type II WD CARC will dry to touch in
approximately 60 minutes, dry hard in six hours,
dry through in eight hours, and completely cure
within seven days.
5-6. Unused Paint. Treat any leftover wash
primer, WD primer or WD CARC as hazardous
waste. If it has
hardened, seal it
and dispose of it
properly. Your
unit’s
SOP
should address
how to handle
hazardous waste.
You can also find
disposal information in the Material Safety Data
Sheets or at your local Environmental Office.
b. Touch-up Kits. Army Research Labs
has tested and validated self-contained touchup kits for use where touch-up or stenciling are
needed. These kits are available as an aerosol
or as a non-aerosol with a sponge roller or brush
applicator. An identical color match with touch
up kits is not required. Colors that are lighter or
SECTION VI. PAINT FAILURES
6-1. Reasons for Failure. There are a number
of reasons why CARC, WD CARC, or any other
paint fails soon after application. Some reasons
are:
a. The surface was improperly prepared.
There was loose or blistered paint, sanding dust,
grease or oil, diesel fuel, or fingerprints on the
surface. Or it could be that lacquer used previously was not removed.
b. No pretreatment or primer was used.
The topcoat was applied directly to bare metal.
c. The primer did not have time to dry
properly before the topcoat was applied.
d. The surface was too hot or cold. The
paint didn’t have a chance to cure properly.
6-2. What to Do. With most paint failures, the
only sure cure is to strip it down to bare metal
and start over. It takes a lot longer to do it over,
so your best bet is to do it right the first time.
WD CARC now available in spray,
roller and brush applications
10
TB 43-0242
cial, NIOSH-approved respirator.
SECTION VII. WELDING WD
CARC-PAINTED SURFACES
9-2. Training, Fitting and Testing. Your local safety office or medical support facility will
fit you for a respirator and be sure you have the
correct type. They will also teach you how to
use it and to check for leaks before each use.
7-1. Welding is Out. Never weld or use a cutting torch on CARC- or WD CARC-painted material. Welding or cutting painted surfaces releases toxic gases, vapors and metal fumes.
9-3. Before Use. Never alter or modify your
respirator.
Be sure you follow the
manufacturer’s instructions for use and wear.
Look for tears or other damage that would prevent a positive seal. When you first put the respirator on, do the positive pressure and negative pressure tests called for in Para 2-7b(4) of
TB MED 502. If you can’t get a good seal, don’t
paint.
7-2. Remove Paint. Before applying any heat,
sand or grind off the paint down to bare metal
on an area at least four inches on either side of
where you plan to apply heat. If the other side
of the metal is painted, remove the paint there,
too.
SECTION VIII. WD CARC
REMOVAL
9-4. Respirator Use. Use your air purifying
respirator (APR) only in well-ventilated areas
where plenty of oxygen is available. Otherwise,
you may pass out. Leave the area immediately
if breathing becomes difficult, if you get dizzy
or if you taste or smell paint.
8-1. Stripper. There are times you need to remove CARC from a surface that can’t be
scratched or scored, such as cannon mounts or
aircraft surfaces. You can’t use sandblasting or
sanding. Instead, use epoxy and polyurethane
paint remover. See Page B-1 for ordering information.
9-5. Cartridge Changes. Replace the filter and
the cartridge in your respirator according to the
change-out schedule determined by health and
safety personnel at your facility or at the first
sign of paint odor while you’re wearing it. Leave
the painting area before removing the respirator. Then, unscrew the cartridge to replace it.
Be sure the rubber gasket is evenly seated in the
filter holder when you put in the new cartridge.
8-2. Safety. Read the warning label on the
stripper and take all the precautions called for.
The Material Safety Data Sheet will have additional information. Your Preventive Medicine
folks can help, too.
8-3. Waste Disposal. Be sure to check with
your local environmental office for guidance on
disposing of the used stripper.
9-6. Paint Pre-filter Replacement. Replace
the pre-filter when breathing becomes difficult.
Remove the filter retaining ring from the front
of the cartridge. Put the replacement filter in
the retainer and replace the entire assembly on
the cartridge front.
SECTION IX, RESPIRATOR CARE
9-1. Respirator Authorized. Under some conditions you may need to wear a respirator. If
you are issued a respirator, follow the instructions of the manufacturer and the issuing office
(safety or medical support facility). Remember,
your gas mask is not a substitute for a commer-
9-7. Filter Replacement for Sanding and
Grinding Operations. Replace the filter cartridges for sanding and grinding operations ac11
TB 43-0242
cording to the schedule established by your
safety and health office or when breathing
through the filters becomes difficult.
9-9. Storage. Before storing your respirator,
make sure it’s clean and dry. Store the respirator in a clean plastic bag labeled with your name
and the date it was cleaned. Make sure that you
store the respirator in a cool, dry area free of
airborne contamination. Do not put it in your
locker unless it is in a container or carton. Be
sure to check the respirator again before using
it.
9-8. Cleaning. Clean and sanitize your respirator after each day's use by following the respirator manufacturer's instructions or consult
safety and health personnel for proper cleaning
procedures. Before using the respirator, be sure
to check it for leaks.
Head strap assembly (upper
and lower straps with yoke)
Cartridge
Exhalation
valve seat
and cover
Pre-filter
Cartridge
holder
Inhalation
valve
12
Cartridge container
TB 43-0242
APPENDIX A
PUBLICATION LIBRARY
Here’s a list of publications and specifications needed for painting operations at various maintenance levels.
Publication
Title
TM 43-0139
Painting Instructions for Army Materiel
TM 55-1500-345-23
Painting and Marking of Army Aircraft
TB MED 502
Occupational and Environmental Health Respiratory Protection
Program
TB 43-0118
Field Instructions for Painting and Preserving Electronics
Command Equipment
TB 43-0144
Painting of Watercraft
TB 43-0147
Color, Marking and Camouflage Patterns used on Military
Equipment
TB 43-0209
Color and Marking of Military Vehicles, Construction Equipment
and Materials Handling Equipment
TB 746-95-1
Color, Marking and Camouflage Pattern Painting for Armament
Command Equipment
TB 750-10
Painting, Replating and Preserving Instructions for
Communications Security Equipment
MIL-C-53072
Chemical Agent Resistant Coating (CARC) System Application
Procedures and Quality Control Inspection
MIL-T-704
Treatment and Painting of Materiel
MIL-STD-171
Finishing of Wood and Metal Surfaces
MIL-STD-186
Protective Finishing for Army Missile Weapon Systems
MIL-STD-193
Paint Procedures and Marking for Vehicles, Construction
Equipment and Material Handling Equipment
MIL-STD-194
System for Painting and Finishing Fire-Control Material
A-1
TB 43-0242
MIL-STD-642
Identification Marking of Combat and Tactical Transport Vehicles
MIL-STD-1473
Standard General Requirements for Color and Marking of Army
Materiel
MIL-DTL-53039
Coating, Aliphatic Polyurethane, Single Component, Chemical
Agent Resistant
MIL-DTL-64159
Coating, Water Dispersible Aliphatic Polyurethane, Chemical
Agent Resistant
MIL-DTL-53022C
Primer, Epoxy Coating, Corrosion Inhibiting Lead And Chromate
Free
Use the ASSIST-Quick Search database to gain direct access to Defense and
Federal specifications and standards available. Go to:
http://assist.daps.dla.mil/quicksearch/
Just enter the specification you need in the Document ID block and click
Submit.
A-2
TB 43-0242
APPENDIX B
WD CARC SYSTEM NSNs
Here are the NSNs for commonly-used quantities of wash primer, WD primers, strippers, and
WD CARC topcoats used with the WD CARC system:
Wash Primer, DOD-P-15328
(for aluminum surfaces)
Wash Primer, MIL-C-8514
(for steel surfaces)
NSN 8030-00-
Kit Size
NSN 8030-
Kit Size
850-7076
1-qt
01-015-6104
1-gal
281-2726
1-gal
00-082-2425
5-gal
165-8577
5-gal
WD Primer
Specification
Color
Size
NSN 8010-01-
MIL-P-53030A
White
1 1/4-qt
193-0519
MIL-P-53030A
White
1 1/4-gal
193-0520
MIL-P-53030A
White
5-gal
193-0521
MIL-PRF-85582C
Light green
1-qt
218-0856
MIL-PRF-85582C
Light green
1-gal
218-7354
MIL-DTL-53022, Type 1
White
1 1/4-qt
193-0516
MIL-DTL-53022, Type 1
White
1 1/4-gal
193-0517
MIL-DTL-53022, Type 2
White
1 1/4-qt
309-0328
MIL-DTL-53022, Type 2
White
1 1/4-gal
309-0329
MIL-DTL-53022, Type 2
White
4-gal
368-6249
MIL-DTL-53022, Type 2
White
5-gal
309-0327
Stripper
NSN 8010-00-
Quantity
142-9273
1 Pt
181-7568
1 Gal
926-1488
5 Gal
926-1489
55 Gal
B-1
TB 43-0242
WD CARC Topcoat, Type I
Color
Green
Brown
Tan
Black
Black
Aircraft green
Aircraft gray
Fed Std No. Kit Size
34094
30051
33446
37030
37038
34031
36300
B-2
NSN 8010-01-
3-pt
492-6637
3-qt
492-6638
3-gal
492-6639
15-gal
492-6640
3-pt
492-6641
3-qt
492-6642
3-gal
492-6643
15-gal
492-6644
3-pt
492-6645
3-qt
492-6646
3-gal
492-6648
15-gal
492-6649
3-pt
492-6650
3-qt
492-6651
3-gal
492-6652
15-gal
492-6654
3-pt
545-1815
3-qt
545-1817
3-gal
545-1818
15-gal
545-1820
3-pt
492-6655
3-qt
492-6656
3-gal
492-6657
15-gal
492-6658
3-pt
492-6659
3-qt
492-6660
3-gal
492-6661
15-gal
492-6663
TB 43-0242
WD CARC Topcoat, Type II
Color
Green
Brown
Tan
Black
Black
Aircraft green
Aircraft gray
Fed Std No. Kit Size
34094
30051
33446
37030
37038
34031
36300
B-3
NSN 8010-01-
3-pt
493-3168
3-qt
493-3169
3-gal
493-3170
15-gal
493-3171
3-pt
493-3172
3-qt
493-3173
3-gal
493-3174
15-gal
493-3175
3-pt
493-3176
3-qt
493-3177
3-gal
493-3179
15-gal
493-3180
3-pt
493-3182
3-qt
493-3183
3-gal
493-3190
15-gal
493-3191
3-pt
545-1944
3-qt
545-1947
3-gal
545-1949
15-gal
545-1955
3-pt
493-3192
3-qt
493-3193
3-gal
493-3194
15-gal
493-3195
3-pt
493-3196
3-qt
493-3197
3-gal
493-3198
15-gal
493-3199
TB 43-0242
WD CARC Topcoat, Type II
Color
Red
Yellow
Olive drab
Blue
White
Sand
Fed Std No. Kit Size
31136
33538
34088
35044
37875
33303
B-4
NSN 8010-01-
3-pt
545-1823
3-qt
545-1825
3-gal
545-1826
15-gal
545-1835
3-pt
545-1836
3-qt
545-1838
3-gal
545-1840
15-gal
545-1841
3-pt
545-1842
3-qt
545-1843
3-gal
545-1844
15-gal
545-1845
3-pt
545-1938
3-qt
545-1939
3-gal
545-1941
15-gal
545-1942
3-pt
545-1956
3-qt
545-1957
3-gal
545-1958
15-gal
545-1959
3-pt
545-1960
3-qt
545-1961
3-gal
545-2016
15-gal
545-2035
TB 43-0242
WD CARC Topcoat,
Aerosol Spray, Type II
Color
Fed Std #
Quantity
NSN 8010-01-
Green
34094
Box of 12
546-7712
Tan
33446
Box of 12
546-7711
Black
37030
Box of 12
546-7713
Brown
30051
Box of 12
546-7709
Sand
33303
Box of 12
547-1917
Yellow
33538
Box of 12
547-1919
Olive drab
34088
Box of 12
547-1920
Gray
36231
Box of 12
547-1921
Gray
36300
Box of 12
547-1922
White
37875
Box of 12
547-1923
Aircraft green
34031
Box of 12
553-5824
Green
34094
Box of 12
Brown
30051
(4 of each
Black
37030
color)
546-8093
B-5
TB 43-0242
WD CARC Topcoat,
Brush-top Applicator, Type II
Color
Fed Std #
Quantity
NSN 8010-01-
Green
34094
Box of 12
546-7585
Tan
33446
Box of 12
546-7587
Black
37030
Box of 12
546-7588
Brown
30051
Box of 12
546-7589
Aircraft red
31136
Box of 12
546-7591
Aircraft
35044
Box of 12
546-7592
Sand
33303
Box of 12
547-1876
Yellow
33538
Box of 12
547-1878
Olive drab
34088
Box of 12
547-1880
Gray
36231
Box of 12
547-1882
Gray
36300
Box of 12
547-1884
White
37875
Box of 12
547-1888
Green
34094
Box of 12
Brown
30051
(4 of each
Black
37030
color)
insignia blue
546-7590
B-6
TB 43-0242
WD CARC Topcoat,
Roller-top Applicator, Type II
Color
Fed Std #
Quantity
NSN 8010-01-
Green
34094
Box of 12
546-7593
Tan
33446
Box of 12
546-7594
Black
37030
Box of 12
546-7596
Brown
30051
Box of 12
546-7595
Aircraft red
31136
Box of 12
546-7598
Aircraft
35044
Box of 12
546-7599
Aircraft white
37875
Box of 12
546-7699
Aircraft yellow
33538
Box of 12
546-7700
Sand
33303
Box of 12
547-1906
Olive drab
34088
Box of 12
547-1908
Gray
36231
Box of 12
547-1910
Gray
36300
Box of 12
547-1913
Aircraft green
34031
Box of 12
553-5822
Green
34094
Box of 12
Brown
30051
(4 of each
Black
37030
color)
insignia blue
546-7597
B-7
Notes
By Order of the Secretary of the Army:
GEORGE W. CASEY, JR.
General, United States Army
Chief of Staff
Official:
JOYCE E. MORROW
Administrative Assistant to the
Secretary of the Army
0708801
PIN 084390-000